Chemical Reactions and Equations Quiz
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Questions and Answers

What is the process in which one or more substances are changed into one or more new substances?

  • Physical reactions
  • Biological reactions
  • Chemical reactions (correct)
  • Nuclear reactions

    • Which of the following is a balanced chemical equation?

  • 2Na + Cl2 -> NaCl3
  • CH4 + O2 -> CO + H2O
  • H2O -> H + O
  • 2H2 + O2 -> 2H2O (correct)

    • What occurs when a substance breaks down into two or more simpler substances?

  • Combustion reaction
  • Decomposition reaction (correct)
  • Double replacement reaction
  • Single replacement reaction

    • What is the central science that provides a foundation for understanding basic and applied scientific disciplines at a fundamental level?

    <p>Chemistry</p> Signup and view all the answers

    Which scientific discipline studies the nature of chemical bonds in chemical compounds?

    <p>Chemistry</p> Signup and view all the answers

    In the scope of its subject, chemistry occupies an intermediate position between which two sciences?

    <p>Physics and Biology</p> Signup and view all the answers

    Which area of specialisation continues to increase in number and interrelate to create further interdisciplinary fields of study within chemistry?

    <p>Subdisciplines</p> Signup and view all the answers

    What does chemistry explain in the field of pharmacology?

    <p>How medications work</p> Signup and view all the answers

    How is chemistry connected to environmental science?

    <p>How atmospheric ozone is formed</p> Signup and view all the answers

    Which word is the origin of the modern word 'chemistry'?

    <p>Alchemy</p> Signup and view all the answers

    What is the current model of atomic structure in chemistry?

    <p>Quantum mechanical model</p> Signup and view all the answers

    In which states can matter be studied according to traditional chemistry?

    <p>Solid, liquid, gas, and plasma</p> Signup and view all the answers

    What is the basis of a chemical transformation?

    <p>Rearrangement of electrons in chemical bonds</p> Signup and view all the answers

    What tool is stereotypically used in a chemistry laboratory?

    <p>Laboratory glassware</p> Signup and view all the answers

    How are chemical substances classified?

    <p>In terms of their structure, phase, and chemical compositions</p> Signup and view all the answers

    What type of reaction is referred to as a nuclear reaction or radioactive decay?

    <p>When the number of atoms on either side of the chemical equation is unequal</p> Signup and view all the answers

    What are the interactions, reactions, and transformations studied in chemistry usually the result of?

    <p>Interactions between atoms</p> Signup and view all the answers

    What is the origin of the word alchemy?

    <p>Arabic word al-kīmīā (الكیمیاء)</p> Signup and view all the answers

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